Not when there are many ports out there without the right colours. Or with the wrong colours. Or arbitrary different colours because some manufacturer has a "bright" idea on their own. Or where it doesn't matter (were the keyb/mouse ports generally interchangeable? I certainly had two machines where they were despite the colour coding and I've seen single ports with "key/mouse" iconography since).

Maybe if the next standard has colours to start with, and they are unambiguous, and somehow not even ambiguous if confused with a previous port version, and they are adhered to by all manufactures, consistently, and nothing new arrives that someone adds a colour for before the standards body makes a decision...